28412720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{449}}^1$

素因数の和:582

約数の個数: 80

約数和(自身を含む): 76334400

約数和(自身を除く): 47921680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 449, 452, 560, 565, 791, 898, 904, 1130, 1582, 1796, 1808, 2245, 2260, 3143, 3164, 3592, 3955, 4490, 4520, 6286, 6328, 7184, 7910, 8980, 9040, 12572, 12656, 15715, 15820, 17960, 25144, 31430, 31640, 35920, 50288, 50737, 62860, 63280, 101474, 125720, 202948, 251440, 253685, 355159, 405896, 507370, 710318, 811792, 1014740, 1420636, 1775795, 2029480, 2841272, 3551590, 4058960, 5682544, 7103180, 14206360, 28412720]

約数ペア:

[(1, 28412720), (2, 14206360), (4, 7103180), (5, 5682544), (7, 4058960), (8, 3551590), (10, 2841272), (14, 2029480), (16, 1775795), (20, 1420636), (28, 1014740), (35, 811792), (40, 710318), (56, 507370), (70, 405896), (80, 355159), (112, 253685), (113, 251440), (140, 202948), (226, 125720), (280, 101474), (449, 63280), (452, 62860), (560, 50737), (565, 50288), (791, 35920), (898, 31640), (904, 31430), (1130, 25144), (1582, 17960), (1796, 15820), (1808, 15715), (2245, 12656), (2260, 12572), (3143, 9040), (3164, 8980), (3592, 7910), (3955, 7184), (4490, 6328), (4520, 6286)]